Rohingya men, and boys as young as 10, trudge through mud as thick as cake batter carrying heavy bamboo poles and bags of bricks balanced on sticks for constructing makeshift shelters.

The risk of getting bogged along the tracks is so great, even the free-range cows have learnt to use the sandbag bridges.

Scores of mothers in black robes and colourful headscarfs, patiently line up at a Save the Children food distribution point to collect their household's rations - a 25 kilogram bag of rice, a parcel of lentils and cooking oil.